You can never go wrong with Spain, the way I see it! Maybe go to AGP once that seasonal flight starts up? I'm not sure what kind of hiking is around (is a beach an acceptable substitute?), but everything else is pretty good. Being a beach town, you're bound to have some kind of lux/spa option available. That one wouldn't be you, would it? ... Food in Spain is, in my opinion, one of the most underrated cuisines in the world. Seville is also a couple hour train ride away, easy day trip (or maybe a night) and that has lots of local culture to check out - lots of history, and excellent night life (or day life, whatever life ).

One other possibility to consider. This is where my bias becomes even less subtle, but how about something in or around the Colorado rocky mountains? Nice central location from all 3 cities. Lots and lots of hiking/adventure out here, and I would imagine you could find a nice hot springs place if you look around a little! Food/local culture is not as thrilling as you'd get out of the country, but for something in the US it's not bad. Lots of mountain/ski towns have really neat personalities. Just be careful of the mountains in Spring. That snow doesn't magically disappear, so they call it the "mud season" for a reason! If you do that, consider spending a day or two in Denver so you can gradually get used to the altitude. Denver's 5280 feet doesn't bother me, but I start to feel just a little different when that number doubles! Oh, and if you fly in and out of DEN, give yourself plenty of time on I-70 coming back if you go on a Sunday. Traffic can be pretty nasty!

What about someplace in Mexico that you can access via SFO or ATL? Like San Miguel de Allende More links (fly into BJX-then taxi or shuttle). Or into mexico city and buy a ticket someplace, I think you can get reasonable priced tickets ($50-$100) to other areas of Mexico. Or for the west coast person fly down to LAX then a lot more options of airports that LAX and ATL service, like Costa Rica and El Salvador. that would just save some time flying across the U.S. to meet up.

All good ideas. A few negs:
other sister (weird one) lives CSP and we've been a few times
All been to Spain (still a possibility but time limited)
DAB is tired of beaches (not sure how she'd feel about the dark sand ones)

Colonial Mex, CR or Nic are contenders, for sure. BJX is kinda odd to access--Puebla is few hrs bus ride from MEX airport. Belize jungle still option, too. Istanbul was so simple to plan--this one is tricky.

Keep the inspiration coming. It's really hard since we don't know timing yet. I'm going to Africa end Arpil, ones going to PHX, and one babysits grands alot. On top of that 94 yr grumpy old man (beloved grandpa) refuses to die or treat his med condition (don't blame him for either!) so that's tenuous.

Don't laugh, Mig, but the 4 jolly buddies DID go to Raffles and have the $20 something+ Singapore Slings two years ago!! When I saw the BKK flt cancelled, I sent them off to SIN on some LCC and they reveled in the high life of the city. Plan B, you know...

I would love to do HKG w/chicks but SFO just did a wk w/hubby for biz in Oct. It's really difficult when the buds travel almost as much as I!! If the timing works for late May, I vote for something on the whacky side, like Bulgaria or Croatia for 4-5 nts. Since we're all SPOILED by biz elite, that becomes a factor for long haul. SFO has put a limit of 7 hrs flt once in ATL due to days avail to stay (she's pretty darned smart!) We all considered Seoul from west coast but it's kinda crappy cold most of our dates. Japan is an option except for sakura timing...Arghhhhh--what's a girl to do?

Ok, we now have a wild card--Puerto Rico! Includes a few days on Vieques and a visit to BioBay (love that place!) and a stop at rain forest for the hikers. Maybe even a pool day at beach posada for this chick...

Now it looks like Colonial Mexico is top of the list! DL has nonstop ATL/BJX, so we can meet ATL; if we have to suffer thru coach for 3 1/2 hrs, we will! haha
We have Queretaro, SMA, and Cuenavaca for options near BJX. Anyone else familiar w/those cities/areas?